Snow-plow.



N0. 651,53I. Patented June [2, I900.

' J. LINDALL, J. F. WHITE-&. P. HARRINGTON.

SNOW PLOW.

(Application filed Jan. 2, 1900.) (No Model.) I 2 Sheets$heet I.

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No. 65l,53l. Patented June. 12;, I900. J. LINDALL, J. F'. WHlTE.-& P.HARRINGTON.

SNOW PLOW.

(Application filedi Jan.

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NITEV JOHN LINDALL, 0F MEDFORD, AND JAMES F. WHITE AND PATRICKHARRINGTON, on BOSTON, MASSACHUSETTS.

SN W-PLOW.

SPECIFICATIGN forming part of Letters Patent No. 651,531, dated June 12,1900. Application filed January 2, 1900. Serial No. 158. (No model.)

To all whom it may concern.-

Be it known that we, JOHN LINDALL, 0 Medford, county of Middlesex, andJAMES F. WHITE and PATRICK HARRINGTON, of Boston, county of Suffolk,State of Massachusetts, have invented an Improvement in Snow- Plows, ofwhich the following description, in connection with the accompanyingdrawings, is a specification, like letters on the drawings representinglike parts.

The present invention relates to a snowplow and is embodied in asnow-plow of the kind commonly used in street-railway work,in which thesnowis cleared away from the track by means of a blade or scraperextending diagonally across the track underneath the body of the plow.In a plow of this description the snow-removing blade is commonly provided at its rear end with an extension known as the outrigger orleveler, the object of which is to level the heap of snow thrown 01f thetrack by the main portion of the blade, so that the said snow will notbe heaped up too near the track, where it will be in the way of thesteps or bodies of the cars. It is not essential or desirable that theoutrigger should be held firmly against the ground, and, in fact, it isnecessary that the said outrigger at times be brought close to the bodyof the plow, so as to clear obstacles which may be close to the track.Furthermore, as the object of the outrigger is merely to level to agreater or less extent the pile of snow it is desirable to avoid theadditional resistance which would be encountered if the said outriggerwere always held close to the ground when there is a very' large body ofsnow to be removed. The outrigger therefore is pivotally connected withthe end of the main blade, so that it can be lifted to a verticalposition when desired, and it has been customary heretofore to hold theoutrigger in place when there is sufficient snow to cause it tootherwise lift up by actually standing upon the outrigger itself. Thiscustom has been objected to on account of the danger to the employees;and it is the object of the present invention to provide the outriggerwith means for yieldingly holding it in position, as is necessary, saidmeans being operated from the body of the plow. This is accomplished inaccordance with the present invention by providing the outrigger with acontroller pivotally connected therewith and extending upward therefrom,the said controller having a suitable guide upon the body of the plowand being yieldingly connected therewith in any suitable way.

Figure 1 is a partial side elevation of a snow-plow embodying theinvention. Fig. 2 is a partial end elevation of the same, and Fig. 3 aside elevation showing a modification.

The snow-plow is provided with the ordinary scraper-blade a, extending.diagonally across the track under the plow-body, and the said blade isprovided with the outrigger b, pivotally connected thereto at 12 thesaid outrigger being shown as provided with a liftingrope 6 by means ofwhich it may be lifted from the track and thrown up toward the body ofthe plow. To keep the outrigger pressed down upon the pile of snow whenthe plow is in use and at the same time leave the said outrigger capableof yielding when the mass of snow is too great to be entirely pushedaside, the said outrigger is Shown as provided with a controlling member0, pivotally connected at b with the outrigger b, the said controllingmember being shown as a rodhaving a guide 0 somewhere upon the body A ofthe plow, so that it is maintained in a nearly vertical position, asindicated. It is obvious,therefore,that a downward-yielding pressureupon the said controlling memher will keep the outrigger in itsoperative position substantially as it would be kept in position by theweight of a man standing directly upon the outrigger itself. Theyielding downward pressure upon the controllerc may be provided for inany suitable or usual Way, the said controller being shown in Figs. 1and 2 as provided with a flexible connecting member (1, which may beyieldingly secured in position in any suitable or usual way. The saidmember 01 may be connected with a lever e, providedwith a treadleportion e the said treadle portion being over the platform or floor ofthe plow, so that one of the men running the plow can stand upon thesaid treadle without leaving the plow, thus by-his own weight holdingdown the outrigger and being capable of exercising his judgment as toreleasing the same exactly as if he were standing upon the outriggeritself.

While the construction shown in Figs. 1 and 2 is desirable, owing to thefact that the down- Ward pressure can be effectually regulated inaccordance with the judgment of the operator substantially as if he werestanding on the outrigger itself, it is obvious that the means forholding the controller 0 may be modified without departing from theinvention. As shown in Fig. 3, for example, the said controller isprovided with a guide-collar 0 working on a stationary vertical guide 0connected with the plow-body, and the said collar is provided with aflexible connecting member al adapted to be wound upon a windlass 6provided with an operating-wheel 6 The said connection is further shownas provided with a spring (1 so that if desired the Windlass may belocked, permitting the outrigger to play up and down within the limitsprovided for by the spring, or, if there is considerable snow, so thatit may be de sirable to permit the outrigger to lift to a considerableextent at times, it may be held in place by manually controlling theoperatingwheel, which can be continually held by the operator andpermitted to yield in accordance with varying conditions.

It is obvious that the specific construction and arrangenient of thecontroller an d its actuating mechanism may be variously modifiedwithout departing from the invention.

We claim 1. In a snow-plow, the combination with the diagonalscraper-blade; of an outrigger or leveler pivotally connected therewith;a controlling-rod extending upward from said leveler toward the body ofthe plow; a guide for the said rod connected with the body of the plowand an actuating device for yieldingly pressing the said rod downward tokeep the outrigger in operative position, substantially as described.

2. In a snow-plow, the combination with the transverse scraper-blade; ofan outrigger pivotally connected therewith; controlling-rod pivotallyconnected with said outrigger and projecting upward toward the body ofthe plow; a guide for the said rod connected with the body of the plow;and a lever also con nected with said rod for producing a down- Wardmovement thereof, substantially as described.

In testimony whereof We have signed our names to this specification inthe presence of two subscribing witnesses.

JOHN LINDALL. JAMES F. WHITE. PATRICK HARRINGTON. Witnesses:

HENRY J. LIVERMORE, NANCY P. FORD.

